In this work, a low-cost and nitrogen-containing carbon with mesoporous pores and high surface area was synthesized by
carbonizing a natural biomass precursor, i.e. beef. It is found that the prepared material has excellent textural properties such as
high specific surface areas and large pore diameters. TEM images showed that the PtRuIr nanoparticles were well dispersed on
the surface of carbonized beef (C-Beef). PtRuIr/C-Beef was highly active for methanol electro-oxidation. PtRuIr/C-Beef showed
superior catalytic activity to PtRuIr/C, i.e. lower onset potential and higher oxidation current density. Cyclic voltammograms
of CO electro-oxidation showed that PtRuIr/C-Beef catalyst was kinetically more active for CO electro-oxidation than PtRuIr
deposited on conventional carbon support. The highly porous structure and low cost of carbonized beef can be widely used as
support for highly dispersed metal nanoparticles to increase their electrochemical performance as electrocatalysts.